Dust collector



Sept. 24, 1929. H. w. TITGEN 'DUST COLLECTOR Filed Aug. 4, 192a Patented Sept. 24, 1929 UNITED STATES- PATENT OFFICE HARRY 'W. TITGEN, OF PHILADELPHIA, PENNSYLVANIA miss COLLECTOR Application filed August 4, 1926. Serial No. 127,139.

vide a cleaning system, wherein the filter unit to be cleaned is subjected to a reverse current of the filtered fluid under pressure, during the normal operation of the other units.

Other objects and applications of my invention, as well as details of construction and operation, wherein my invention 1 may be practiced,will be apparent more fully hereinafter, when taken in connection with the accompanying drawing, wherein Figs. 1 and 2 are side elevational and plan views, respectively, of a filtering system embodying my invention;

Fig. 3 is a transverse sectional view taken on the line 33 of. Fig. 1; and

.Fig. 4 is a detail,horizontal sectional view taken. on the line 44 of Fig. 1.

In accordance with my invention, filtering or screening units 1 and 2 are suitably mounted in a housing 3, so that..relatively clean sides 4 and 5 may constitute walls of independent discharge chambers 6 and 7 respectively. Opposite sides 8 and- 9 of the units 1 and 2 respectively constitute walls of dust chambers 11 and 12 which may have an interconnecting passage 13.' The dust chambers 11 and 12 are respectively provided with branch pipes 14 and 15 which are controlled by valves 16 and 17. The pipes 14 and 15 are connected to a common supply pipe 18 carrying a fluid to be cleaned.

The discharge chambers 6 and 7 are respectively provided with a set of outlet pipes 19 and 21 having control valves-22 and 23. A common suction pipe 24 serves to connect the pipes 19 and 21 to a suction side 25 of a tan.

or other propelling means 26. The fan 26 is 7 provided with a discharge pipe 27 extending from a pressure side 28 thereof and controlled by a valve 29.

A second set of'pipes 31 and 32 are respectively connected to the discharge chambers 6 and 7 and are provided with valves 33 and 34. The pipes 31 and32 may be connected by a common pipe 35 to a point 36 on the discharge pipe 27 intermediate the propelling means 26 and the control valve 29.

Under conditions of normal operation, wherein the units 1 and 2 are used to clean the fluid passing through the supply pipe 18, the valves 16, 17, 22, 23 and 29 are opened, while the valves 33 and 34 are closed. As shown by the solid line arrows, the dust-laden fluid then passes from the main supply pipe 18 through the branch pipes 14 and 15 into the dust chambers 11 and 12, respectively. The suction created by the fan 26 causes the fluid to pass through the units 1 and 2, resulting in the dust being deposited on the sides 8 and 9. The filtered fluid passes from the relatively clean discharge chambers 6 and 7 through the=branch pipes'19 and 21, respectively, int-o the common suction pipe 24, leading to the fan 26. The latter blows the cleaned fluid through the discharge pipe 27 under pressure to any desired point.

When it isdes'irable to clean one of the units, say the unit 2, valves 17 23, 33 and 29 are closed and valve 34 is opened, with the. result that the clean fluid'passing through the discharge pipe 27 is deflected so as to pass through the common pipe 35 and the branch pipe 32 into the discharge chamber 7, where the fluid is-blown through the unit 2 from the relatively clean'side 5 thereof, as indicated by thedotted-line arrows. The passage of the fluid through the unit2 causes the dust deposited onthe opposite side 9 to be blown therefrom and the unit thereby cleaned. The dust thus removed may be collected in a suitable hopper 37. The fluid entering the dust chamber 12 from the chamber 7 may escape through the interconnecting passage 13 into the suction chamber 11 of the adjoining unit where it mingles with the dust laden suction currents entering through the supply pipe 18 and branch pipe 14. A closed circulating system traversing the path of the dotted-line arrows is thus formed, wherein the cleaned fluid is withdrawn from the cleaning system at the point 36, reversely blown through the unit 2.from the clean side 5 thereof and returned to the system again in the dust chamber 11 of the unit 1 which all the while is operatin in the normal manner.

Should it be desira le to clean the exposed side 8 of the filtering unit lrather than the unit 2, valves 17, 23 and 33 are opened and the valves 34, 22 and 16 closed. The operation of these valves permits the fan 26 to draw the dust-laden fluid from the supply pipe 18 through the branch pipe 15, thedust chamber 12 and the filter unit 2, the clean fluid passing from the discharge chamber 7 through the branch pipe 21 and the common pipe 24 to the fan 26 and connected discharge pipe 27 as noted above.

The opening of the valve 33 and the closing of the valves 16 and 22, however, prevents the normal suction effect of the fan 26 from causing a passage of the fluid to. be cleaned through the branch ipe 14, the dust chamber 11 and the unit 1. gince the valve 33 is open and the valve 22 is closed, the cleanfluid passing through the pipe 27 is deflected through the pipe 35 and the branch pipe 31 into the chamber 6, where it is blown through the unit 1, causing the removal of the dust from the side 8 thereof. This dust may be collected in a hopper 38. The=fluid entering the dust chamber 11 may be again returned to the cleaning system through the passage 13 opening into the dust chamber 12 of the unit 2 which in the meantime has been operating in the normal manner.

While I have shown only one embodiment of my invention, for the purpose of describing the same and illustrating its principles of construction and operation, it is apparent that various changes and modifications may be madetherein without departing from the spirit of my invention and I desire, therefore, that only such limitations shall be imposed thereon as are indicated in the appended claims or as are demanded by the prior art.

I claim:

sequently drawn through the clean side of another unit.

2. A plurality of screening units having independent discharge chambers and communicating intake chambers, fluid-propelling means, connections between the pressure and discharge sides of said propelling means and said discharge chambers, and means for controlling said connections whereby the cleaned fluid may be supplied to one of said chambers under pressure while being withdrawn from another.

3. In combination, filtering means, fluidpropelling meanshaving suction piping connected to said filtering means, a discharge pi e for said propelling means having a Va ve, piping extending to said filtering means from a point on said discharge pipe intermediate said valve and said propelling means, and valves for controlling the flow of fluid through said piping, whereby said filtering means may be reversely operated.

4. In combination, a plurality of filtering units, a supply pipe having independent connections to said units, a fan, the pressure and discharge sides of which respectively have independent connections to said units, and

valves whereby fluid may be blown through one unit to cause the cleaning thereof.

5. A pair of filtering units, propelling means, a set of pipe-s extending from said units and provided with control valcv a common pipe for said set of pipes exten ing to the suction side of said propelling means, the latter having a discharge pipe provided with a valve, a second set of pipes having valves and extending from said filtering units, and a common pipe for said second set connected to said discharge pipe intermediate said propelling means and the valve for said discharge pipe.

'6. A pair of screening units having discharge chambers, propelling means, a set of pipes extending from said chambers having control means, a common pipe for said set extending to the suction side of said propelling means, a second set of pipes extending from said chamber having control means therefor, a common pipe extending from said second set, and a pressure discharge pipe for said propelling means having control means, said second-mentioned common pipe being connected to said discharge pipe intermediate said last-mentioned controlmeans and said propelling means.

7. In combination, a plurality of filtering units having discharge chambers and dust chambers, a pair of pipes extending to said dust chambers provided with control valves, a set of pipes extending from said discharge chambers and having control valves, propelling means having a common suction pipe connected to said set of pipes, a pressure discharge pipe for said propelling means having a valve, a second set of pipes extending from said discharge chambers and provided with valves, and a common pipe for said second set connected to said pressure discharge pipe at a point intermediate the control valve therefor and said propelling means.

8. A pair of filtering units, connected dust chambers and independent discharge chamhers, a pair of valve controlled pipes extending to said dust chambers, a suction fan, a set of valve controlled pipes for said discharge chambers having a common suction pipe connected to said fan, a pressure discharge pipe for said fan having a valve control, a second set of valve controlled pipes extending-from said discharge chambers, and a common pipe for said second set connected to said discharge i e.

RY W; TITGEN. 

